Vapor-burner



'( Model.)

vNo. 283,977.

J. E. DONQVAN.

VAPOR BURNER. l

Patentsd Aug. 28, 1883.

N. Patins, mmumagnpm. wmangm u c.

FITCH@ JOHN E. DONOVAN, CINCINNATI, OHIO. i

meen-BURNER.

SPECIFICATION forming part of Letters PatentNo. 283,977, dated August 28,1883. Appleaiion filed December 29, 1880. (Medel.)

To all whom, it may concern.-

Be it known that I, JOI-IN E. DONOVAN, of Cincinnati, in the county of Hamilton, and in the State of Ohio, havainvented certain new and useful Improvements in Vapor-Burners; and I do hereby declare that the following` is a full, clear, and exact description thereof,

ings, making a 1o reference being had to the accompanying drawpart of this specification, in which- Figure l is a perspective viewvof my improved burner arranged for use. Fig. 2 is a vertical central section of the same upon aline lengthwise of the burner; andl Fig. 3 is a section upon line x x of Fig. 2.

Letters of like name and kind refer to like parts in each of the figures.

The design of my invention is to increase the efficiency of `vapor-burners, and to render the same more uniform in operation, to which end it consists, principally, inthe means employed for equalizing and controlling pressure within the burner and reservoir, substantially as and for the purpose hereinafter specified.

'In the annexed drawings, A represents a reservoir having any desired form, which is closed at lits upper end, and at its lower end is secured to or upon a metal block or elbow, B, that in turn rests upon and is secured to asuit- 'able supporting-base, C.

Formed within and extending downward Afrom the upper end of the 'elbow B are two openings, b and b', which, at their lower ends, are intersected by a horizontal opening, b2, that extends from one side of said elbow inward through said opening b to said opening b, and from its outer end inward to said opening Z1 has a considerably larger diameter than from thenceto its inner end. Vithin the outer largest portion of the opening b2 is inserted and secured one end of a tube, D, while within the inner smaller portion of said opening is secured a second smaller tube, E, which passes outward through said tube D and has its outer end upon a line, with or slightly beyond the outer end of thelatter. The space between the interior of said tube D and the exterior of the tube E is loosely filled with wirecloth F. From the upper end of the vertical opening b a tube, G, extends upward nearly to the upper end of the reservoir A, while within the opening b is placed a stop-eock, consisting of a tapering valve, I-I, which is formed upon the end of a screw-threaded stem, 71 and, passing horizontally inward through a packed opening provided in the 'side of the elbow, fits wit-hin a tapering seat that is formed in said elbow and intersects said opening b. The outer end of the tube D is secured within a burner, ll, and communicates with a passage, i, that from thence extends downward, andthen horizontally rearward, and at its rear end receives an elbow-section, K, that is provided with a passage, k, that from said passage@ extends rearward, and thence vertically downward. The upper open end of the passage t is inclosed by means of a screw-plug, L, while the lower end of the passage 7a is in like manner inclosed by means of a similar screw-plug, M, and at or vnear the lower end of the elbow-section K is provided a cup, k, which surrounds and is secured upon the same.

Between the upper and lower ends of the elbow-section K is a horizontal cylindrical enlargement, kz, which is principally lo cated upon the side toward the reservoir A, and is provided with an axial opening, 7c3, that is threaded in rear of the opening k, and in front of said opening has an outwardly-decreasing diameter, and at its end is very small.

Passing through the supporting-base C is a rod, N, which, near its outer end, is-provided with a screw-thread that corresponds to and closely lls the threaded portion of the opening k3, and at its end is tapered to iit within and fill the tapering portion of said opening. If the rod N is turned backward, its end n will be partly or wholly withdrawn from the tapering portion of the opening 7c3, so as to open communication through 4the latter with the passage 7u, while by turning said rod forward its said tapered end or valve n may be caused to partly or entirely fill said opening, which thus becomes a valve-seat, and thus partially or wholly cuts off communication with said passage k.

Directly in front of the opening 7c3, within the burner I, is provided an opening, t, which has several times the diameter of the passage i, and decreases in diameter from its rear end to its .front end, at which latter point said opening connects with and opens into a tube, O, that from `thence extends forward, and then in a curve upward. The tube O is cousiden IOO i the space between the tubes D and` E, after which said valve is closed. The valve n is then opened sufficiently to permit, the liquid to escape from the opening k3 and partly fill v the cup 7c', after which said valve is closed and said liquid ignited. The heat given off from the burning liquid within the ycup k raises the temperature of the elbow-section K and the rear end of the main section I of the burner swfiiciently to cause the liquid within said parts'to become vaporized, after which the valve n is opened and said vapor permitted `to escape from the opening k3 into the opening i', where it becomes ignited, and, passing into the tube O, mixes with air that enters through the openings o and burns with a steady heatingiiame. The heat of the yflame within the opening i is communicated to the burner I, and

serves to maintain the vaporization of the fluid within the latter after all fluid within the cup k" has been consumed. After the vapor has been produced and ignited the upper valve, A, is opened sufficiently to permit'the passage of the necessary quantity of liquid to maintain the supply of combustible vapor, while, by

the adjustment of the valve n, the amount' of vapor consumed, and consequently the size of the flame, may be regulated. The wire-cloth filling F between the tubes D and E checks the iiow of fluid and causes the same to be delivered to the `burner in a steady uniform quantity. In consequence of the tube E, openings b and b2, and tube Gfree communication is afforded between the burner I and the upper portion of the reservoir A, so that all surplus gas produced within said burner may pass into said reservoir, whereby the pressure withinsaid parts is equalized, and all impediment from such cause to the natural iiow of the liquid is prevented. y In order that all danger from undue pressure within the apparatus may be avoided, the

said vapor being absorbed by the surrounding screw cap or plug P, which closes the lling opening a within the upper end of the reservoir A, is provided with a round tapering opening, p, which has its smallest end downward and receives a correspondingly-shaped valve, Q, that is provided above and below with a stem, q. The lower end of the valvestem q is threaded and supplied witha nut, R, and between said nut andthe lower end of the plug Pis placed a volute spring, S, that, by means of saidnut, may be caused to draw downward upon the valve Q with any desired 6 5y degree of force. rIhe valve Q being adjusted to the desired pressure, any excess of such pressure will causesaid valve to rise, so as to. permit of the escape of gas, the operation being similar to that of an ordinary safety-valve.

In consequence of the inclosure of the vaporconducting pipe within the pipe used for supplying liquid to the burner the mechanism is rendered compact, and is not liable to disarrangement; and, in addition thereto, the vap or in passing to the reservoir is protected. from material loss of temperature and consequent condensation, such heat as is given off from liquid.

Having thus fully set forth the nature'and merits of my invention, what I claim as new 1s- 1. In a vapor-burner having supply-tubes, the combination of oil-passage k and 'needlevalve n, the mixing-chamber O and the burnersection I, and expansion heating-chamber i, located between the oil-passage and mixingchamber and supply-tubes, so that the expansion heating-chamber will connect with the supply-tubes and oil-passage k, and the opening 1l of the burner-section will be between the needle-valve and miXingchamber, substantially as described.

2. In a vapor-burner, the -combination of tubes D and E, reservoir A, provided with tube G, and the intermediate separate elbow, B, provided with passages b b', connecting with tubes D and E, substantially as described. v

have hereunto set my hand this 24th day of f December, 1880.

JOHN E. DONOVAN.

Witnesses:

SAML. E. HILLEs, S. O. -FATUM, Jr. 

